Award Date

1-1-2007

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Civil and Environmental Engineering

First Committee Member

Moses Karakouzian

Number of Pages

60

Abstract

The Non-contact ultrasound (NCU) technology was used as an alternative to characterize the physical properties of asphalt binder. The objective of this research is to correlate the physical properties of asphalt binder with non-contact ultrasound measurements. The physical properties of asphalt binder are viscosity and penetration. In this study two types of' AC 30 and AC40 asphalt binders are used. For each type of asphalt binder there are original and aged samples. The non-contact ultrasound measurements are integrated response (IR) and wave velocity (Vm). The IR is the attenuation value of the area underneath the signal wave measured in decibels and can be used to measure the amount of ultrasonic energy transmitted or reflected from a test material. The wave velocity is the velocity of the ultrasound when it passes through the material. The results show that IR can he correlated with physical properties: however wave velocity does not correlate well.

Keywords

Asphalt; Binder; Characterization; Marterial; Testing; Ultrasound

Controlled Subject

Civil engineering; Materials science

File Format

pdf

File Size

1894.4 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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